I am having this same issue. When I loaded the latest update on mobile, the client showed me having access to full art card styles for ALL cards. After I switched the card style for some of the cards (that I apparently did not actually have), now I have no way of switching them back. I cannot add cards to my draft deck because every time I click a card it pulls up the UI to have me purchase the card style. I cannot build my draft deck unless I purchase the card style for every single card I want to use, which I cannot afford to do (nor would I like to do it).
To clarify, this makes the draft I bought and drafted literally unplayable - I cannot play with card styles I don't own, and I cannot switch the card styles back to the original art because the menu option does not appear - presumably because I don't own any card styles for some of these cards, there is no option for me to change the card style.
I am having this same issue. When I loaded the latest update on mobile, the client showed me having access to full art card styles for ALL cards. After I switched the card style for some of the cards (that I apparently did not actually have), now I have no way of switching them back. I cannot add cards to my draft deck because every time I click a card it pulls up the UI to have me purchase the card style. I cannot build my draft deck unless I purchase the card style for every single card I want to use, which I cannot afford to do (nor would I like to do it).
To clarify, this makes the draft I bought and drafted literally unplayable - I cannot play with card styles I don't own, and I cannot switch the card styles back to the original art because the menu option does not appear - presumably because I don't own any card styles for some of these cards, there is no option for me to change the card style.